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Environmental Engineering

Environmental Engineering
The design discharge for the combined sewer system shall be taken as

Equal to rainfall
Rainfall + 6 DWF
Rainfall + DWF
Rainfall + 2 DWF

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Environmental Engineering
The chemical most commonly used to increase speed of sedimentation of sewage is

Lime
Sodium permanganate
Sulphuric acid
Copper sulphate

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Environmental Engineering
Which of the following values of pH represents a stronger acid?

3
4
2
5

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Environmental Engineering
The distribution mains are designed for

Maximum hourly demand on maximum day
Maximum hourly demand
Maximum daily demand
Average daily demand

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Environmental Engineering
The suitable method of forecasting population for a young and rapidly increasing city is

Arithmetical increase method
Graphical method
Incremental increase method
Geometrical increase method

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Environmental Engineering
The maximum discharge of a tube well is about

500 liters/sec
5 liters/sec
1000 liters/sec
50 liters/sec

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